Spring-wheel.



' To all whom *it may concern:

HENRY J. WILDHAG-EN, `E" PALATINE, ILLINOIS. l

SPRING-WHEEL.

Specification of Letters'latent.' l Patented Sept. 14:, 1909.

Application filed September 1, 1908. Serial No. 451,210. i

Be it known that. I, HENRY J. VILDHAGEN,

citizen ofY the United States, residing at,

Palatine, in the county of Cook and Statel of Illinois, have invented certain new and useful Improvements in Spring-l/Vhee'ls, of which the following is a specilication.

This invention relates to spring wheels,

. and has for its object to provide an improved .device of the kind characterized particularly by an in'n'r wheel or structure and an outer rim or structure, the latter being connected to the former by means4 of springs so that 'relative yielding or vibration is permit-ted.

The device has various otheradvantages with respect particularly to the means for supporting and guiding the parts relatively to each other, as will more fu y appear from the following description and the accompa- In the drawings, Figure 1 is a side elevanon of the wheel; rig. e is a dean in ingi- Vtudinal section of the outer rim and adjacent parts of the inner structure; Fig. 3 is a section on the line 3--3 of Fig. 1.

Referring speciically to the drawings, thel hub is indicated at 6, and may be of any suitable or desired construction. It supports or receives the inner ends of spokes 7 the outer ends of which aie connected by rings 8,

- of which there is one on each iside, so that a space is formed between said rings The rim spokes. These ears project inwardly within or between the rings 8 and work in contact therewith, whereby lateral play or movement is prevented. The. outer rim structure is braced by rods 13 arranged angularly and symmetrically extending across from one side of the wheel to the other and to so brace' the rim in all directions. The braces are provided on b oth sides of the wheel. The

innerand outer wheel structures thus produced as described are connected together by their inner ends to the opposite sides of the f respective. spokes, the springs being arranged iii pairs between the spokes, and curved to produce the requisite elasticity, and fastened to the ears l2 by sleeves 15 at the ends thereof through which the bolts 16 extend, said bolts connectin the ears 12 and also serving the purpose o attaching the ends of the braces 13 to the ears. Theends of the springs are located between the ears 12 .and preferably 'occupy the full width of the space. 1 ,Y

It is obvious from the' construction described that the outer rim structure is capable of movement or vibrationwith respect to the' inner structure, and such movement is cushioned by the springs 14, which not only means of springs 14 which are fastened at allow the vertical movement perpendicular to the pressure` of the load, but will also allowv the vertical movement at the middle line of the wheel.

In otherl words the springs will yield in all directions in the planeof the j Various modificationsmay be made within the scope of the invention as deined in the following claims, and no limitationis implied byv reason of the particular construction shown and described.

l claim:y I

l.. spring Wheel comprising a central structure having spokes, spaced rings connecting said spokes -on opposite sides of the outer ends'thereof, a rirn having pairs'of j opposite ears projecting inwardly between the said rings and working in Contact therewith in the spaces between the spokes to prevent lateral pl'ay of. the rim, springs fastenedA at their inner ends to the spokes and iconnected at their outer ends to bolts, said bolts extending transversely through the ears and provided with projecting ends, and brace rods extending angular-ly within ythe rim and connected at their ends to the projecting ends of said ear bolts. f

2. A spring wheel comprising a central structure having spokes, spaced rings connecting said spokes on opposite sides of thel outer ends thereof, ariin havingpairs of opposite. ears projecting. inwardly between therings, at points between said spokes, fiat springs arranged in pairs and connected. at

their inner ends to opposing sides of respective ones of said spokes, and having inwardly In testimony whereof, I affix my signature cuved oute ends connected to bolts, said in presence of tWo Witnesses'.

bo ts exten ing transversely throueh the y ears, and provided with projecting enls, and HENRX J' VTLDHAGEN' brace rods extending angularly within the VVitne'sses: rim and connected at their ends to the pro- WVM. J. ROBINSON, jecting ends of said enr bolts. NELLIE lFELTSKOG. 

